The FDA approved remdesivir as a treatment for severe COVID-19 cases last month.
This is after granting emergency authorization in May, reports Business Insider.
But on Thursday, the WHO announced it will not recommend the drug's use for COVID-19 patients.
"There is currently no evidence that it improves survival or the need for ventilation," the organization said.
Remdesivir was the first coronavirus treatment to receive emergency authorization from the FDA.
With Pfizer and Moderna's vaccines on the horizon, there is less of a need for weaker treatments.
